Braking device for cloth laying machines



Oct. 8, 1968 E. M. MERRILL 3,404,850

BRAKING DEVICE FOR CLOTH LAYING MACHINES Original Filed Aug. 5, 1965 2 Sheets-Sheet 1 P/afa eZecfr/c Calf/a1 a/ f? /l/o'far 5 22 Sin '2 f7 o v v Oct. 8, 1968 E. M. MERRILL BRAKING DEVICE FOR CLOTH LAYING MACHINES 2 Sheets-Sheet F;

Original Filed Aug.

United States Patent 3,404,850 BRAKING DEVICE FOR CLOTH LAYING MACHINES Edward M. Merrill, Sayville, N.Y., assignor to Cutting Room Appliances Corp., New York, N.Y., a corporation of New York Original application Aug. 5, 1965, Ser. No. 477,372, now Patent No. 3,345,062, dated Oct. 3, 1967. Divided and this application Apr. 17, 1967, Ser. No. 636,237

4 Claims. (Cl. 24275.4)

ABSTRACT OF THE DISCLOSURE In a cloth laying machine, improved brakin means including a pair of pivotally mounted brake shoe members defining in one position an open interstice into which a cloth roll supply shaft may be inserted, inserting movement causing a pivoting of the shoes to position for applying a braking force thereupon.

This application is a division of my copending application Ser. No. 477,372, filed Aug. 5, 1965, entitled Cloth Laying Machine for Knit Goods, now Patent No. 3,345,062, granted Oct 3, 1967.

The invention relates generally to the field of cloth laying machines, and more particularly to an improved braking means operating directly upon a cloth supply roll shaft, the braking means including a pair of pivotally mounted brake shoes which are resiliently urged to a first position facilitating insertion of a cloth supply roll shaft therebetween, downward movement of said shaft serving to pivot the shoes to operative braking condition.

It is the principal object of the present invention to provide improved constant braking means which may be incorporated into the cloth roll lateral shifting means to form a part thereof.

Another object of the invention lies in the provision of improved braking means of the class described in which the braking force is resiliently applied.

These objects, as well as other incidental ends and.

advantages, will more fully appear in the progress of the following disclosure, and be pointed out in the appended claims.

In the drawings, to which reference will be made in the specification, similar reference characters have been employed to designate corresponding parts throughout the several views.

FIGURE 1 is a fragmentary side elevational view of an embodiment of the invention.

FIGURE 2 is a fragmentary end elevational view thereof, as might be seen from the right-hand portion of FIGURE 1.

FIGURE 3 is a fragmentary enlarged view in perspective corresponding to the upper left-hand portion of FIGURE 1.

FIGURE 4 is an enlarged fragmentary side elevational view corresponding to the upper left-hand portion of FIGURE 1, and showing certain of the component parts 3,404,850 Patented Oct. 8, 1968 thereof in the same altered relative position as that seen in FIGURE 3.

FIGURE 5 is an enlarged fragmentary vertical longitudinal sectional view as seen from the plane 55 in FIGURE 2.

FIGURE 6 is an enlarged fragmentary view in eleva tion as seen from the plane 6-6 in FIGURE 4.

FIGURE 7 is a view in elevation of the divider element forming a part of the disclosed embodiment, certain altered relative positions of some component parts thereof being indicated in dashed lines.

FIGURE 8 is a fragmentary enlarged view in elevation of a flanged collar which serves as braking means for a cloth roll supply shaft.

In accordance with the invention, the device, generally indicated by reference character 10, includes a cloth laying carriage 11 adapted for movement over a cloth laying table (not shown) of conventional type. The carriage 11 includes a pair of vertical frame members 13 and 14, interconnected by horizontal members (not shown), and provided with wheeled means (also not shown), the details of which form no part of the present disclosur Supported by the carriage 11 is a knit goods roll sup porting means 17 including an integral braking means, the details of which will more fully appear hereinbelow, the means 17 supporting a knit goods roll 18 from which a web 19 is drawn. As best seen in FIGURE 2, the web 19 includes first and second layers 20 and 21, respectively, joined at side fold edges 22 and 23. The web 19 passes over a guide element 24 including electric eye sensing means 25 and control means 26, the details of which are disclosed in the copending application of Gerard J. Wendelken, Ser. No. 330,419, filed Dec. 13, 1963, now Patent No. 3,222,005, and assigned to the same assignee as the instant application. The control means 26 operates lateral shifting means 27 which shifts the roll 18 and web 19 in accordance with signals received from the sensing means 25 to maintain the edge 22 in a common vertical plane. As best seen in FIGURES 1 and 2, upon leaving the guide element 24, the web 19 passes about an expandable divider element 28 before passing between a pair of opposed positively driven feed rolls 29 and 30 operated by a chain drive 31, the details of which are well known in the art.

Referring to the roll supporting means 17, the same includes a roll suppporting shaft 34, a first end (not shown) of which is supported in structure of the type disclosed in US. Patent No. 3,112,107, granted Nov. 26, 1963, to Emmanuel Theodosiou, and assigned to the same assignee as the instant application. The opposite end 36 is supported upon a nylon roller 37 arranged to rotate about an axis perpendicular to the shaft 34. The roller 37 is supported upon a bracket 38 having vertical guides 39 and 40, in turn supported by an adjustable vertical frame 41 mounted on a lower member 42. A pair of brackets 43 and 44 support horizontally disposed rods 45 and 46 upon which there is mounted a transversely slidable element 47.

The element 47 includes a main body member 48 connected to a sprocket chain 49 passing over idler pulleys 50, 51 and 52, as well as a driven pulley 53. The pulley 53 is mounted on a shaft 54 driven by a shifting motor 55 through gear reduction means 56, the above-described structure forming the lateral shifting means 27.

To permit the roll to be continuously braked as the web 19 is pulled from the roll 18, a braking means 57 is provided on body member 48. The means 57 includes a pair of vertically disposed links 58 and 59 mounted upon pintles 60 and 61 (see FIGURE 4) for rotation about parallel axesJThe links 58 and 59 are interconnected by a nut 62 and bolt 63 passing through brackets 64 on each of the links 58 and 59. A coil spring 65 urges the brackets 64 in mutually opposed directions, and from a consideration of FIGURE 4 it will be observed that by adjusting the relationship between the nut 62 and the bolt 63, the horizontal distance between corresponding portions of the links 58 and 59 are adjusted.

Mounted upon each of the links 58 and 59 are upper pintles 66 and 67, respectively, each engaging the clevis portion 68 of opposed brake shoes 69 and 70. The shoes 69-70 are substantially similar, each including an arcuately shaped portion 71 having an inner surface 72 mounting a strip of asbestos or other brake lining material 73. The material 73 engages a flanged collar 74 on the shaft 34 to exert a braking action thereon. The shoes 69-70 are normally urged to an upward position seen in FIG- URES 3 and 4 and by the action of a coil spring 75 (see FIGURE 6) to define an interstice therebetween. By comparing FIGURES 3 and 4 with FIGURE 1, it will be observed that as the shaft 34 and attached collar 74 are lowered into the interstice formed by the shoes 69-70, the shoes are pivoted in opposite directions to engage approximately one half of the outer cylindrical surface of the collar 74, and transmit braking torque through set screws, one of which is indicated by reference character 76. The adjustment of the nut 62 and bolt 63 is such that the pivoting action will take place without binding, but is nevertheless sufficient to exert proper braking torque as the shaft 34 is rotated. It will be observed that the weight of the shaft is borne not by the brake shoes 69-70 but by the roller 37.

The guide element 24 is preferably formed from sheet metal having a polished outer surface, and includes end walls 78 and 79 and a transverse wall 80. The wall 80 includes a curved leading portion 81, a generally planar portion 82 and a curved trailin portion 83 leading to a trailing edge 84. As the web 19 passes over the outer surface of the transverse wall 80, it passes between illumination means 85 and photocell means 86 which sense the edge 22, whereby the shifting motor 55 maintains the edge in a common vertical plane.

The expanding divider element 28 passes internally of the tubular web, and serves to maintain the width of the web substantially constant just prior to the passing of the web between the rolls 29 and 30. Since during operation the divider element 28 is completely surrounded by the web 19, it cannot be positively connected to the carriage 11, but, as seen in FIGURE 5, the same is supported within the interstice formed by the rolls 29-30. To assure that the sensed edge 22 remains in a constant vertical plane at this point, there is provided an electromagnet 89 and a roller 90 (see FIGURE 2) arranged for rotation about a horizontal axis. During operation, the leftward edge 91 is pulled against the surface of the roller 90, although insulated from direct contact therewith by the presence of the web.

To provide for adjustability in a transverse direction, the divider element 28 includes first and second frame members 92 and 93, respectively. Mounted on the second frame member 93 is a resiliently biased third frame member 94.

The first frame member 92 includes a lower horizontal member 96 in the form of a hollow sleeve (see FIGURE 5). The member 96 is connected to a vertical member 97 which is maintained in fixed relation with respect to the above-mentionedroller 90, as well as upper horizontal members 98. The members 98 mount a spring-operated friction latch 99. The upper end of the vertical member 97 is bent to form a top horizontal member 100 having a downwardly curved end 101 to prevent snagging of the same with the web 19.

The second frame member 93 is generally similar in configuration, including a lower horizontal member 103 mating with the member 96, a corresponding vertical member 104, an upper horizontal member 105 and a top horizontal member 102 having a downwardly curved end 106. The vertical member 104 mounts a bracket 107, in turn supporting short horizontal members 108 and 109. The members 108 and 109 mount a bracket 110 which define an interstice for the third frame member 94.

The third frame member 94 is resiliently biased with respect to the second frame member 93, and includes a horizontal member 111 slidably disposed in the abovementioned interstice. The inner end 112 thereof mounts one end of a spring 113, the opposite end being connected to the bracket 110. Connected to the outer end of the horizontal member 111 is a vertical member 114, the outer edge 115 of which contacts the inner surface of the fold edge 23.

Prior to operation, the second frame member 93 is adjusted with respect to the first frame member 92 such that the outer edge 115 of the third frame member 94 will exert a proper degree of tension to maintain the web at a predetermined width. As the carriage 11 moves over the surface of the cloth laying table, the rolls 29 and 30 will draw the web 19 from the roll 18. As the web passes over the guide element 24, the cooperation of the means 25-26 maintains the web such that the edge 22 remains in a predetermined constant plane. The contact with the guide element 24 is of a sliding nature, providing a minimum of friction which might result in shifting or relative movement betwen the layers 20-21. Upon leaving contact with the guide element 24, the web engages the divider element 28 as described hereinabove. As the rollers 29-30 feed the web, the divider element 28 is prevented from passing therebetween owing to the width of the interstice formed by the rolls as compared with the width of the divider element 28 at the lower horizontal member 96. The web of cloth is then laid upon the table in well-known manner, the web being severed at the end of each stroke by suitable well-known means (not shown).

I wish it to be understood that I do not consider the invention limited to the precise details of structure shown and set forth in this specification, for obvious modifications will occurs to those skilled in the art to which the inventlon pertains.

I claim:

1. In a means for supporting a cloth supply roll shaft upon a cloth laying carriage, adjustable braking means comprising: a body member, a pair of link members pivotally connected to said body member for movement about a first pair of parallel axes, a pair of brake shoe members each pivotally connected to one of said pair of link members about a second pair of parallel axes spaced from said first pair of parallel axes, means adjustably fixing the distance between said second pair of parallel axes, each of said brake shoe members including an arcuately-shaped braking surface corresponding in radius to the diameter of a part of said supply roll shaft, and being resiliently biased in opposite rotational directions to define an interstice therebetween; movement of part of said supply roll shaft into said interstice serving to pivot said brake shoes into tightly fitting engagement with a cylindrical surface of said part of said supply roll.

2. Structure in accordance with claim 1, including means for shifting said body member parallel to the axis of an engaged supply roll shaft.

3. Structure in accordance with claim 2, including means for independently supporting the weight of said supply roll shaft, whereby said pair of brake shoes transmit only thrust and braking forces to said supply roll shaft.

4. In a cloth laying machine having means for braking a cloth roll supply shaft at one end thereof, the improvement comprising:

(a) first and second link members; first and second brake shoe members pivotally mounted upon said link members for movement about parallel axes;

(b) each of said brake shoes including an arcuately shaped braking surface corresponding to a cylindical 10 surface on said cloth roll supply shaft; (c) said brake shoes in one relative position thereof defining an interstice, movement of said shaft into said interstice serving to pivot said shoes to a second relative position to wedge said cloth roll supply shaft therebetween.

References Cited UNITED STATES PATENTS 1,664,026 3/ 1928 Farmer 24275.4 X 3,207,451 9/ 1965 Kane 24275.4 X 3,310,254 3/ 1967 Merrill 24275.4

FRANK J. COHEN, Primary Examiner.

NATHAN L. MINTZ, Assistant Examiner. 

